package com.changgou.file.controller;


import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {

    //文件上传
    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file){
        try {
            //判断文件是否存在
            if (file == null){
                throw new RuntimeException("文件不存在");
            }
            //文件的完整名称
            String originalFilename = file.getOriginalFilename();
            if (StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }
            //扩展名
            String exName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //文件内容
            byte[] content = file.getBytes();
            //封装
            FastDFSFile fastDFSFile=   new FastDFSFile(originalFilename,content,exName);
            //文件上传  接收返回参数
            String[] upload = FastDFSClient.upload(fastDFSFile);
            //封装返回结果
            String url = FastDFSClient.getTrackerUrl()+upload[0]+"/"+upload[1];
            return new Result(true, StatusCode.OK,"文件上传成功",url);

        } catch (Exception e) {
            e.printStackTrace();
        }
        return  new Result(false,StatusCode.ERROR,"文件上传失败");
    }

     //删除
      @PostMapping("del")
      public Result deleteFile(String fileId) throws Exception {
          try {
              int i = FastDFSClient.deleteFile1(fileId);
          } catch (Exception e) {
              e.printStackTrace();
              throw  new Exception("文件删除失败");
          }
          return new Result();
      }
}
